Nutritional requirements generally go up during pregnancy. which nutritional requirement proportionally increases the most during pregnancy?

Calories

B) Protein

C) Iron

D) Vitamin A

Explanation : According to the DRIs, when a woman is pregnant they do not required a significant increase of calories in the first trimester until the second trimester when the baby start to demand more nutrients as it develops further.An extra 340 cal/day is recommended during the second trimester. An extra 452 cal/day is recommended during the third trimester.The demand increase as the baby develops further .

The iron also need to be increased as demand for blood supply increases during pregnancy .

since you have not provided the options here i   am going to give you general overview about hormone.hormone are actually the part of endocrine system in our body and produced by the endocrine glands. the hormones act like a chemical messenger   within human body. once produce by the glands they   travel through the blood stream and reach at specific or target tissue and organs   which result in control of our body function. the hormones are specific in their work and work on only the targeted tissue or organ   . with the of hormone endocrine system regulate the heart rate , metabolism, our mood and   growth as well as the development and even the sleeping cycle etc. they actually are the messenger for body cell and organs .

the answer is false, i know this answer is late but its for anyone else that needs it.